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emacs/test/manual/image-tests.el
Eli Zaretskii cae528457c ; Add 2023 to copyright years.
2023-01-01 05:31:12 -05:00

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;;; image-tests.el --- tests for image.c -*- lexical-binding: t; -*-
;; Copyright (C) 2021-2023 Free Software Foundation, Inc.
;; Author: Stefan Kangas <stefankangas@gmail.com>
;; Keywords: internal
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; These tests will only run in a GUI session. You must run them
;; manually in an interactive session with, for example, `M-x
;; eval-buffer' followed by `M-x ert'.
;;
;; To run them from the command line instead, try:
;; ./src/emacs -Q -l test/manual/image-tests.el -eval "(ert t)"
;;; Code:
(defmacro image-skip-unless (format &rest condition)
`(skip-unless (and (and (display-images-p)
(image-type-available-p ,format))
,@condition)))
(defconst image-tests--images
`((gif . ,(expand-file-name "test/data/image/black.gif"
source-directory))
(jpeg . ,(expand-file-name "test/data/image/black.jpg"
source-directory))
(pbm . ,(find-image '((:file "splash.svg" :type svg))))
(png . ,(find-image '((:file "splash.png" :type png))))
(svg . ,(find-image '((:file "splash.pbm" :type pbm))))
(tiff . ,(expand-file-name
"nextstep/GNUstep/Emacs.base/Resources/emacs.tiff"
source-directory))
(webp . ,(expand-file-name "test/data/image/black.webp"
source-directory))
(xbm . ,(find-image '((:file "gnus/gnus.xbm" :type xbm))))
(xpm . ,(find-image '((:file "splash.xpm" :type xpm))))))
;;;; Load image
(defmacro image-tests-make-load-image-test (type)
`(ert-deftest ,(intern (format "image-tests-load-image/%s"
(eval type t)))
()
(image-skip-unless ,type)
(let* ((img (cdr (assq ,type image-tests--images)))
(file (if (listp img)
(plist-get (cdr img) :file)
img)))
(find-file file))
(should (equal major-mode 'image-mode))
;; Cleanup
(kill-buffer (current-buffer))))
(image-tests-make-load-image-test 'gif)
(image-tests-make-load-image-test 'jpeg)
(image-tests-make-load-image-test 'pbm)
(image-tests-make-load-image-test 'png)
(image-tests-make-load-image-test 'svg)
(image-tests-make-load-image-test 'tiff)
(image-tests-make-load-image-test 'webp)
(image-tests-make-load-image-test 'xbm)
(image-tests-make-load-image-test 'xpm)
(ert-deftest image-tests-load-image/svg-too-big ()
(with-temp-buffer
(let* ((max-image-size 0)
(messages-buffer-name (buffer-name (current-buffer)))
(img (cdr (assq 'svg image-tests--images)))
(file (if (listp img)
(plist-get (cdr img) :file)
img)))
(save-excursion (find-file file))
(should (string-match-p "invalid image size" (buffer-string)))
;; no annoying newlines
(should-not (string-match-p "^[ \t\n\r]+$" (buffer-string)))
;; no annoying double error reporting
(should-not (string-match-p "error parsing" (buffer-string))))))
(ert-deftest image-tests-load-image/svg-invalid ()
(with-temp-buffer
(let ((messages-buffer-name (buffer-name (current-buffer))))
(with-temp-buffer
(pop-to-buffer (current-buffer))
(insert (propertize " "
'display '(image :data
"invalid foo bar"
:type svg)))
(redisplay))
;; librsvg error: "... Start tag expected, '<' not found [3 times]"
(should (string-match-p "[Ee]rror.+Start tag expected" (buffer-string)))
;; no annoying newlines
(should-not (string-match-p "^[ \t\n\r]+$" (buffer-string))))))
;;;; image-test-size
(declare-function image-size "image.c" (spec &optional pixels frame))
(ert-deftest image-tests-image-size/gif ()
(image-skip-unless 'gif)
(pcase (image-size (create-image (cdr (assq 'gif image-tests--images))))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/jpeg ()
(image-skip-unless 'jpeg)
(pcase (image-size (create-image (cdr (assq 'jpeg image-tests--images))))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/pbm ()
(image-skip-unless 'pbm)
(pcase (image-size (cdr (assq 'pbm image-tests--images)))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/png ()
(image-skip-unless 'png)
(pcase (image-size (cdr (assq 'png image-tests--images)))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/svg ()
(image-skip-unless 'svg)
(pcase (image-size (cdr (assq 'svg image-tests--images)))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/tiff ()
(image-skip-unless 'tiff)
(pcase (image-size (create-image (cdr (assq 'tiff image-tests--images))))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/webp ()
(image-skip-unless 'webp)
(pcase (image-size (create-image (cdr (assq 'webp image-tests--images))))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/xbm ()
(image-skip-unless 'xbm)
(pcase (image-size (cdr (assq 'xbm image-tests--images)))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/xpm ()
(image-skip-unless 'xpm)
(pcase (image-size (cdr (assq 'xpm image-tests--images)))
(`(,a . ,b)
(should (floatp a))
(should (floatp b)))))
(ert-deftest image-tests-image-size/error-on-invalid-spec ()
(skip-unless (display-images-p))
(should-error (image-size 'invalid-spec)))
;;;; image-mask-p
(declare-function image-mask-p "image.c" (spec &optional frame))
(ert-deftest image-tests-image-mask-p/gif ()
(image-skip-unless 'gif)
(should-not (image-mask-p (create-image
(cdr (assq 'gif image-tests--images))))))
(ert-deftest image-tests-image-mask-p/jpeg ()
(image-skip-unless 'jpeg)
(should-not (image-mask-p (create-image
(cdr (assq 'jpeg image-tests--images))))))
(ert-deftest image-tests-image-mask-p/pbm ()
(image-skip-unless 'pbm)
(should-not (image-mask-p (cdr (assq 'pbm image-tests--images)))))
(ert-deftest image-tests-image-mask-p/png ()
(image-skip-unless 'png)
(should-not (image-mask-p (cdr (assq 'png image-tests--images)))))
(ert-deftest image-tests-image-mask-p/svg ()
(image-skip-unless 'svg)
(should-not (image-mask-p (cdr (assq 'svg image-tests--images)))))
(ert-deftest image-tests-image-mask-p/tiff ()
(image-skip-unless 'tiff)
(should-not (image-mask-p (create-image
(cdr (assq 'tiff image-tests--images))))))
(ert-deftest image-tests-image-mask-p/webp ()
(image-skip-unless 'webp)
(should-not (image-mask-p (create-image
(cdr (assq 'webp image-tests--images))))))
(ert-deftest image-tests-image-mask-p/xbm ()
(image-skip-unless 'xbm)
(should-not (image-mask-p (cdr (assq 'xbm image-tests--images)))))
(ert-deftest image-tests-image-mask-p/xpm ()
(image-skip-unless 'xpm)
(should-not (image-mask-p (cdr (assq 'xpm image-tests--images)))))
(ert-deftest image-tests-image-mask-p/error-on-invalid-spec ()
(skip-unless (display-images-p))
(should-error (image-mask-p 'invalid-spec)))
;;;; image-metadata
(declare-function image-metadata "image.c" (spec &optional frame))
;; TODO: These tests could be expanded with files that actually
;; contain metadata.
(ert-deftest image-tests-image-metadata/gif ()
(image-skip-unless 'gif
(not (bound-and-true-p w32-use-native-image-API)))
(should (memq 'delay
(image-metadata
(create-image (cdr (assq 'gif image-tests--images)))))))
(ert-deftest image-tests-image-metadata/jpeg ()
(image-skip-unless 'jpeg)
(should-not (image-metadata
(create-image (cdr (assq 'jpeg image-tests--images))))))
(ert-deftest image-tests-image-metadata/pbm ()
(image-skip-unless 'pbm)
(should-not (image-metadata (cdr (assq 'pbm image-tests--images)))))
(ert-deftest image-tests-image-metadata/png ()
(image-skip-unless 'png)
(should-not (image-metadata (cdr (assq 'png image-tests--images)))))
(ert-deftest image-tests-image-metadata/svg ()
(image-skip-unless 'svg)
(should-not (image-metadata (cdr (assq 'svg image-tests--images)))))
(ert-deftest image-tests-image-metadata/tiff ()
(image-skip-unless 'tiff)
(should-not (image-metadata
(create-image (cdr (assq 'tiff image-tests--images))))))
(ert-deftest image-tests-image-metadata/webp ()
(image-skip-unless 'webp)
(should (memq 'delay
(image-metadata
(create-image (cdr (assq 'webp image-tests--images)))))))
(ert-deftest image-tests-image-metadata/xbm ()
(image-skip-unless 'xbm)
(should-not (image-metadata (cdr (assq 'xbm image-tests--images)))))
(ert-deftest image-tests-image-metadata/xpm ()
(image-skip-unless 'xpm)
(should-not (image-metadata (cdr (assq 'xpm image-tests--images)))))
(ert-deftest image-tests-image-metadata/nil-on-invalid-spec ()
(skip-unless (display-images-p))
(should-not (image-metadata 'invalid-spec)))
;;; image-size-tests.el ends here
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